Eight patients had mitral stenosis, 15 mitral regurgitation with mild mitral stenosis, 8 aortic regurgitation with mild mitral stenosis, 3 idiopathic hypertrophic subaortic stenosis (IHSS), and 6 myocardiopathy.
The volumes were calculated from single plane cineventriculograms exposed at 36 frames/sec.
In mitral stenosis, the mean end-diastolic volume (LVEDV cc/m2) was 57.3±4-12.68 cc/m2, systolic volume(LVESV cc/m2) 26.7±10.8cc/m2, and stroke volume(SV cc/m2) 30.6±2.78cc/m2. And the ejection grection (EF) was 53.4±12.1%, and left ventricular end diastolic pressure 7.19±4.06mmHg.
In mitral regurgitation combined with mild mitral stenosis, the LVEDV, LVESV, SV and EF were increased with varying degree by the increase of regurgitation. There was no significant correlation between LVEDP and the degree of mitral regurgitation.
In aortic regurgitation combined with mild mitral stenosis, LVEDV, LVESV and SV were increased by the degree of regurgitation. But EF was slightly decreased in severe aortic regurgitation.
In IHSS, LVEDV(47.67±7.13cc/m2) and LVESV (7.93±2.00cc/m2) were markedly decreased. But SV (39.74±7.76cc/m2) and EF(83.4±4.4%) were increased in spite of upper normal value of LVEDP(11.7 ±0.58mmHg).
In myocardiopathy, LVEDV(107.57±29.03cc/m2) and LVEDP (24.33±6.95mmHg) were markedly increased. However SV(33.95±11.69cc/m2) was not increased and EF (24.38±8.3 %) was markedly decreased.
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